function ToggleHourGlass() {
	// hide banners when we show the hourglass
	ShowBanners(false);
	
	HourGlass = document.getElementById("hourGlass");
	if (HourGlass != null)
	{		
		// Move the hourglass to the center of the page
		HourGlass.style.top = GetScrollTop() + 150 +'px' ;
		HourGlass.style.display = "block";
	}
	window.onunload = ToggleHourGlassOff;
}

function GetScrollTop()
{
	if (self.pageYOffset) // all except Explorer
	{
		 return self.pageYOffset;
	}
	else if (document.documentElement && document.documentElement.scrollTop)
	// Explorer 6 Strict
	{
		return document.documentElement.scrollTop;
	}
	else if (document.body) // all other Explorers
	{
		return document.body.scrollTop;
	}
}

function ToggleHourGlassOff() {
	// show banners when we hide the hourglass
	ShowBanners(true);
	
	HourGlass = document.getElementById("hourGlass");
	if (HourGlass != null)
	{		
		HourGlass.style.display = "none";
	}
}